AN INVESTIGATION OF THE UNOCCUPIED P-SYMMETRY STATES IN AG-CONTAINING AND PD-CONTAINING SYSTEMS VIA L-](L-1) HIGH-RESOLUTION NEAR-EDGE X-RAY-ABSORPTION SPECTROSCOPY

In this work, the first systematic study of the low-lying, unoccupied p-derived states in Pd- and Ag- containing systems is reported. Ag and Pd M(4,5) near-edge X-ray absorption spectroscopy measurements from bulk Ag and Pd binary alloys, namely Cu50Pd50, Cu80Pd20, Ag50Pd50 and Ag80Pd20, and of the Ag/Si(111)2 x 1 interface were performed. Recent studies have indicated that this kind of spectroscopy can provide valuable information on the unoccupied p-projected density of states, via a 3d --> 5p dipole allowed transition.